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Journal of Materials Science

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13-12-2018 | Chemical routes to materials

Enhancement of photocatalytic performance of TaON by combining it with noble-metal-free MoS₂ cocatalysts

Authors: Yukai Chen, Lijuan Tan, Menglong Sun, Chunhua Lu, Jiahui Kou, Zhongzi Xu

Published in: Journal of Materials Science | Issue 7/2019

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Abstract

Utilizing cocatalysts is an effective measure to enhance photocatalytic activities of photocatalysts. Nevertheless, noble-metal cocatalysts such as Pt and Au impose astounding costs on the application of photocatalytic technology. Herein, noble-metal-free MoS₂ was used as a cocatalyst to improve the photocatalytic activity of visible-light-responsive TaON for the first time. This work indicates that MoS₂/TaON presented higher activity than Pt/TaON while MoS₂ costs much less than Pt. The photocatalytic degradation ratio of RhB over Ta1Mo1 (mass ratio of TaON:MoS₂ = 1:1) was about 65% after 2 h visible light irradiation, which is about five times higher than that of pure TaON. Furthermore, MoS₂/SiO₂/TaON ternary photocatalysts were constructed to further improve the photocatalytic performance. When the mass ratio of Ta8Si1 (mass ratio of TaON:SiO₂ = 8:1) to MoS₂ was 1:1, the degradation ratio of RhB reached 75% after 2 h visible light irradiation. This work provides a facile method to construct high-efficient photocatalysts with the noble-metal-free cocatalyst MoS₂, paving the way to realize the application of cheap and environment-friendly photocatalysis.

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Title: Enhancement of photocatalytic performance of TaON by combining it with noble-metal-free MoS2 cocatalysts
Authors: Yukai Chen
Lijuan Tan
Menglong Sun
Chunhua Lu
Jiahui Kou
Zhongzi Xu
Publication date: 13-12-2018
Publisher: Springer US
Published in: Journal of Materials Science / Issue 7/2019
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-018-03214-9

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